export type LockTool = 'bun' | 'npm' | 'pnpm' | 'yarn';
export declare const LOCKFILES: string[];
export declare const lockOf: (root: string) => {
    file: string;
    tool: LockTool;
} | undefined;
export declare const isYarnOne: (lockfile: string) => boolean;
export type YarnLock = 'berry' | 'empty' | 'neither' | 'one';
export declare const yarnLockKind: (lockfile: string) => YarnLock;
export declare const pinsIn: (lockfile: string) => Map<string, Set<string>>;
/** A bump pruned another package's entries from fifteen to nine and killed a hoist; `install`, `--force` and deleting `.modules.yaml` all said "Already up to date". The lockfile is the only place that was written down. */
export declare const packagesMovedIn: (before?: string, after?: string) => string[];
export declare const lockfileIn: (root: string) => string | undefined;
export type DependencyGraph = {
    dependencies: Map<string, Set<string>>;
    optional: Map<string, Set<string>>;
};
export declare const dependencyGraphIn: (lockfile: string) => DependencyGraph;
export type LockMoves = {
    direct: string[];
    kit: {
        count: number;
        heads: string[];
    };
    other: number;
    total: number;
};
export declare const lockMovesOf: ({ after, declared, moved, roots }: {
    after: string | undefined;
    declared: ReadonlySet<string>;
    moved: readonly string[];
    roots: readonly string[];
}) => LockMoves;
export type SnapshotChange = {
    after: number;
    before: number;
    id: string;
    name: string;
    peers: string[];
};
export declare const snapshotChangesIn: (before: string, after: string) => SnapshotChange[];